19 open source boards using the LM4040DBZ-2.5
Real designs built with the LM4040DBZ-2.5, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
STM32Plinkyblack hwmidi jacks
plinkysynth
121.9 × 109.2 mm261 parts4LMIT221
RP2040/RP2350Audcalc
jonbro
65 × 100 mm214 parts4LMIT59
STM32Plinkyblack hwmidi jacks
ember-labs-io
121.9 × 109.2 mm261 parts4LCC-BY-SA-4.019
Expander
43.2 × 128.3 mm68 parts2LCC-BY-NC-4.019
NXPRMTS-Hardware
reilleya
78.1 × 50.2 mm82 parts2LNo license14
AVR/ArduinoPcb smd
rapidalarm
53.3 × 47 mm46 parts2LNo license3
DMM KiCAD V4 next
oihdesigns
68.5 × 53.3 mm79 parts4LNo license2
Therm temp 4 20 xmtr
ControlSystemIntegrators
50 × 50 mm45 parts4LMIT0
Expander just back
20.3 × 104.3 mm59 parts2LCC-BY-NC-4.019
DMM Giga Shield Version
95.6 × 53.3 mm77 parts4LNo license2
DMM XIAO Specific Footprint
68.5 × 53.3 mm76 parts4LNo license2
DMM XIAO V3 AsOrdered
68.5 × 53.3 mm68 parts4LNo license2
AVR/ArduinoNametagVoltmeter
88.9 × 50.8 mm66 parts4LNo license2
Xyab
43.2 × 128.3 mm68 parts2LMIT221
Xyab
43.2 × 128.3 mm68 parts2LCC-BY-SA-4.019
DMM KiCAD V4 UnoSpecific
68.5 × 53.3 mm63 parts4LNo license2
AVR/ArduinoDMM Feather Redux
85.5 × 47.4 mm60 parts4LNo license2
DMM Feather Specific
68.5 × 53.3 mm57 parts4LNo license2
FeatherVoltmeterPCBA
23.5 × 51.1 mm28 parts4LNo license2
The LM4040DBZ-2.5 in open source designs
The gallery holds 19 open source boards using the LM4040DBZ-2.5 from 8 GitHub repositories; a typical one measures about 68.5 × 53.3 mm and carries around 68 components.
68% use four copper layers or more, and 32% carry an open source license.
The most starred is Plinkyblack hwmidi jacks by plinkysynth.
Parts used alongside the LM4040DBZ-2.5
Microcontrollers on boards using the LM4040DBZ-2.5
What boards using the LM4040DBZ-2.5 are built for
LM4040DBZ-2.5: common questions
Where can I find a LM4040DBZ-2.5 reference design?
Each of the 19 boards on this page is a real design using the LM4040DBZ-2.5. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
What parts are used alongside the LM4040DBZ-2.5?
The HCPL-0631, DAC7554IDGS, SN74LVC1G17DBV, TL072 and W25Q32JVSS appear in the most repositories here.
Which microcontrollers do boards using the LM4040DBZ-2.5 use?
Most are built on AVR/Arduino (3), STM32 (2), NXP (1) and RP2040/RP2350 (1).
How big is a typical board using the LM4040DBZ-2.5?
The median is 68.5 × 53.3 mm, and 32% are two-layer designs.
What is the most popular open source board using the LM4040DBZ-2.5?
By GitHub stars, Plinkyblack hwmidi jacks by plinkysynth, with 221 stars.
Can I simulate one of these boards using the LM4040DBZ-2.5 before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.